The NJU6363 series is a C-MOS fundamental quartz crystal oscillator that consists of an oscillation amplifier, 3-stage divider and 3-state output buffer. The 3-stage divider generates only one frequency selected of f0,f0/2,f0/4 f0/8, f0/16 and f0/32 by internal circuits is output. The oscillation amplifier is realized very low stand-by current using NAND circuit. The 3-state output buffer is C-MOS compatible.